Implementation of the target library information. More...

#include "llvm/Analysis/TargetLibraryInfo.h"

Public Types
enum	VectorLibrary { NoLibrary , Accelerate , DarwinLibSystemM , LIBMVEC_X86 , MASSV , SVML , SLEEFGNUABI , ArmPL , AMDLIBM }
	List of known vector-functions libraries. More...

Public Member Functions
	TargetLibraryInfoImpl ()

	TargetLibraryInfoImpl (const Triple &T)

	TargetLibraryInfoImpl (const TargetLibraryInfoImpl &TLI)

	TargetLibraryInfoImpl (TargetLibraryInfoImpl &&TLI)

TargetLibraryInfoImpl &	operator= (const TargetLibraryInfoImpl &TLI)

TargetLibraryInfoImpl &	operator= (TargetLibraryInfoImpl &&TLI)

bool	getLibFunc (StringRef funcName, LibFunc &F) const
	Searches for a particular function name.

bool	getLibFunc (const Function &FDecl, LibFunc &F) const
	Searches for a particular function name, also checking that its type is valid for the library function matching that name.

bool	getLibFunc (unsigned int Opcode, Type *Ty, LibFunc &F) const
	Searches for a function name using an Instruction `Opcode`.

void	setUnavailable (LibFunc F)
	Forces a function to be marked as unavailable.

void	setAvailable (LibFunc F)
	Forces a function to be marked as available.

void	setAvailableWithName (LibFunc F, StringRef Name)
	Forces a function to be marked as available and provide an alternate name that must be used.

void	disableAllFunctions ()
	Disables all builtins.

void	addVectorizableFunctions (ArrayRef< VecDesc > Fns)
	Add a set of scalar -> vector mappings, queryable via getVectorizedFunction and getScalarizedFunction.

void	addVectorizableFunctionsFromVecLib (enum VectorLibrary VecLib, const llvm::Triple &TargetTriple)
	Calls addVectorizableFunctions with a known preset of functions for the given vector library.

bool	isFunctionVectorizable (StringRef F, const ElementCount &VF) const
	Return true if the function F has a vector equivalent with vectorization factor VF.

bool	isFunctionVectorizable (StringRef F) const
	Return true if the function F has a vector equivalent with any vectorization factor.

StringRef	getVectorizedFunction (StringRef F, const ElementCount &VF, bool Masked) const
	Return the name of the equivalent of F, vectorized with factor VF.

const VecDesc *	getVectorMappingInfo (StringRef F, const ElementCount &VF, bool Masked) const
	Return a pointer to a VecDesc object holding all info for scalar to vector mappings in TLI for the equivalent of F, vectorized with factor VF.

void	setShouldExtI32Param (bool Val)
	Set to true iff i32 parameters to library functions should have signext or zeroext attributes if they correspond to C-level int or unsigned int, respectively.

void	setShouldExtI32Return (bool Val)
	Set to true iff i32 results from library functions should have signext or zeroext attributes if they correspond to C-level int or unsigned int, respectively.

void	setShouldSignExtI32Param (bool Val)
	Set to true iff i32 parameters to library functions should have signext attribute if they correspond to C-level int or unsigned int.

void	setShouldSignExtI32Return (bool Val)
	Set to true iff i32 results from library functions should have signext attribute if they correspond to C-level int or unsigned int.

unsigned	getWCharSize (const Module &M) const
	Returns the size of the wchar_t type in bytes or 0 if the size is unknown.

unsigned	getSizeTSize (const Module &M) const
	Returns the size of the size_t type in bits.

unsigned	getIntSize () const
	Get size of a C-level int or unsigned int, in bits.

void	setIntSize (unsigned Bits)
	Initialize the C-level size of an integer.

void	getWidestVF (StringRef ScalarF, ElementCount &FixedVF, ElementCount &Scalable) const
	Returns the largest vectorization factor used in the list of vector functions.

Static Public Member Functions
static bool	isCallingConvCCompatible (CallBase *CI)
	Returns true if call site / callee has cdecl-compatible calling conventions.

static bool	isCallingConvCCompatible (Function *Callee)

Friends
class	TargetLibraryInfo

Detailed Description

Implementation of the target library information.

This class constructs tables that hold the target library information and make it available. However, it is somewhat expensive to compute and only depends on the triple. So users typically interact with the TargetLibraryInfo wrapper below.

Definition at line 83 of file TargetLibraryInfo.h.

Member Enumeration Documentation

◆ VectorLibrary

enum llvm::TargetLibraryInfoImpl::VectorLibrary

List of known vector-functions libraries.

The vector-functions library defines, which functions are vectorizable and with which factor. The library can be specified by either frontend, or a commandline option, and then used by addVectorizableFunctionsFromVecLib for filling up the tables of vectorizable functions.

Enumerator
NoLibrary
Accelerate
DarwinLibSystemM
LIBMVEC_X86
MASSV
SVML
SLEEFGNUABI
ArmPL
AMDLIBM

Definition at line 124 of file TargetLibraryInfo.h.

Constructor & Destructor Documentation

◆ TargetLibraryInfoImpl() [1/4]

TargetLibraryInfoImpl::TargetLibraryInfoImpl ( )

Definition at line 885 of file TargetLibraryInfo.cpp.

References initialize().

◆ TargetLibraryInfoImpl() [2/4]

TargetLibraryInfoImpl::TargetLibraryInfoImpl ( const Triple & T )

explicit

Definition at line 892 of file TargetLibraryInfo.cpp.

References initialize().

◆ TargetLibraryInfoImpl() [3/4]

TargetLibraryInfoImpl::TargetLibraryInfoImpl ( const TargetLibraryInfoImpl & TLI )

Definition at line 899 of file TargetLibraryInfo.cpp.

◆ TargetLibraryInfoImpl() [4/4]

TargetLibraryInfoImpl::TargetLibraryInfoImpl ( TargetLibraryInfoImpl && TLI )

Definition at line 910 of file TargetLibraryInfo.cpp.

Member Function Documentation

◆ addVectorizableFunctions()

void TargetLibraryInfoImpl::addVectorizableFunctions ( ArrayRef< VecDesc > Fns )

Add a set of scalar -> vector mappings, queryable via getVectorizedFunction and getScalarizedFunction.

Definition at line 1182 of file TargetLibraryInfo.cpp.

References llvm::append_range(), compareByScalarFnName(), compareByVectorFnName(), and llvm::sort().

Referenced by addVectorizableFunctionsFromVecLib().

◆ addVectorizableFunctionsFromVecLib()

void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib	(	enum VectorLibrary	VecLib,
		const llvm::Triple &	TargetTriple
	)

Calls addVectorizableFunctions with a known preset of functions for the given vector library.

Definition at line 1248 of file TargetLibraryInfo.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_be, Accelerate, addVectorizableFunctions(), AMDLIBM, ArmPL, DarwinLibSystemM, llvm::Triple::getArch(), LIBMVEC_X86, MASSV, NoLibrary, SLEEFGNUABI, SVML, VecFuncs_Accelerate, VecFuncs_AMDLIBM, VecFuncs_ArmPL, VecFuncs_DarwinLibSystemM, VecFuncs_LIBMVEC_X86, VecFuncs_MASSV, VecFuncs_SLEEFGNUABI_VF2, VecFuncs_SLEEFGNUABI_VF4, VecFuncs_SLEEFGNUABI_VFScalable, and VecFuncs_SVML.

Referenced by llvm::driver::createTLII(), and initialize().

◆ disableAllFunctions()

void TargetLibraryInfoImpl::disableAllFunctions ( )

Disables all builtins.

This can be used for options like -fno-builtin.

Definition at line 1166 of file TargetLibraryInfo.cpp.

Referenced by initialize().

◆ getIntSize()

unsigned llvm::TargetLibraryInfoImpl::getIntSize ( ) const

inline

Get size of a C-level int or unsigned int, in bits.

Definition at line 256 of file TargetLibraryInfo.h.

Referenced by llvm::TargetLibraryInfo::getIntSize().

◆ getLibFunc() [1/3]

bool TargetLibraryInfoImpl::getLibFunc	(	const Function &	FDecl,
		LibFunc &	F
	)		const

Searches for a particular function name, also checking that its type is valid for the library function matching that name.

If it is one of the known library functions, return true and set F to the corresponding value.

FDecl is assumed to have a parent Module when using this function.

Definition at line 1135 of file TargetLibraryInfo.cpp.

References assert(), F, llvm::Function::getFunctionType(), getLibFunc(), llvm::Value::getName(), llvm::GlobalValue::getParent(), llvm::Function::isIntrinsic(), and llvm::NotLibFunc.

◆ getLibFunc() [2/3]

bool TargetLibraryInfoImpl::getLibFunc	(	StringRef	funcName,
		LibFunc &	F
	)		const

Searches for a particular function name.

If it is one of the known library functions, return true and set F to the corresponding value.

Definition at line 967 of file TargetLibraryInfo.cpp.

References buildIndexMap(), llvm::StringRef::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), and sanitizeFunctionName().

Referenced by getLibFunc(), and llvm::TargetLibraryInfo::getLibFunc().

◆ getLibFunc() [3/3]

bool TargetLibraryInfoImpl::getLibFunc	(	unsigned int	Opcode,
		Type *	Ty,
		LibFunc &	F
	)		const

Searches for a function name using an Instruction Opcode.

Currently, only the frem instruction is supported.

Definition at line 1156 of file TargetLibraryInfo.cpp.

References F, llvm::Type::isDoubleTy(), and llvm::Type::isFloatTy().

◆ getSizeTSize()

unsigned TargetLibraryInfoImpl::getSizeTSize ( const Module & M ) const

Returns the size of the size_t type in bits.

Definition at line 1354 of file TargetLibraryInfo.cpp.

Referenced by llvm::TargetLibraryInfo::getSizeTSize().

◆ getVectorizedFunction()

StringRef TargetLibraryInfoImpl::getVectorizedFunction	(	StringRef	F,
		const ElementCount &	VF,
		bool	Masked
	)		const

Return the name of the equivalent of F, vectorized with factor VF.

If no such mapping exists, return the empty string.

Definition at line 1314 of file TargetLibraryInfo.cpp.

References F, llvm::VecDesc::getVectorFnName(), and getVectorMappingInfo().

Referenced by llvm::TargetLibraryInfo::getVectorizedFunction(), and isFunctionVectorizable().

◆ getVectorMappingInfo()

const VecDesc * TargetLibraryInfoImpl::getVectorMappingInfo	(	StringRef	F,
		const ElementCount &	VF,
		bool	Masked
	)		const

Return a pointer to a VecDesc object holding all info for scalar to vector mappings in TLI for the equivalent of F, vectorized with factor VF.

If no such mapping exists, return nullpointer.

Definition at line 1324 of file TargetLibraryInfo.cpp.

References compareWithScalarFnName(), F, I, llvm::lower_bound(), and sanitizeFunctionName().

Referenced by getVectorizedFunction(), and llvm::TargetLibraryInfo::getVectorMappingInfo().

◆ getWCharSize()

unsigned TargetLibraryInfoImpl::getWCharSize ( const Module & M ) const

Returns the size of the wchar_t type in bytes or 0 if the size is unknown.

This queries the 'wchar_size' metadata.

Definition at line 1347 of file TargetLibraryInfo.cpp.

Referenced by llvm::TargetLibraryInfo::getWCharSize().

◆ getWidestVF()

void TargetLibraryInfoImpl::getWidestVF	(	StringRef	ScalarF,
		ElementCount &	FixedVF,
		ElementCount &	Scalable
	)		const

Returns the largest vectorization factor used in the list of vector functions.

Definition at line 1395 of file TargetLibraryInfo.cpp.

References compareWithScalarFnName(), llvm::StringRef::empty(), llvm::ElementCount::getFixed(), llvm::ElementCount::getScalable(), I, llvm::details::FixedOrScalableQuantity< ElementCount, unsigned >::isKnownGT(), llvm::lower_bound(), and sanitizeFunctionName().

Referenced by llvm::TargetLibraryInfo::getWidestVF().

◆ isCallingConvCCompatible() [1/2]

bool TargetLibraryInfoImpl::isCallingConvCCompatible ( CallBase * CI )

static

Returns true if call site / callee has cdecl-compatible calling conventions.

Definition at line 151 of file TargetLibraryInfo.cpp.

References llvm::CallBase::getCallingConv(), llvm::CallBase::getFunctionType(), llvm::Instruction::getModule(), and llvm::Module::getTargetTriple().

Referenced by llvm::FortifiedLibCallSimplifier::optimizeCall(), and llvm::LibCallSimplifier::optimizeCall().

◆ isCallingConvCCompatible() [2/2]

bool TargetLibraryInfoImpl::isCallingConvCCompatible ( Function * Callee )

static

Definition at line 157 of file TargetLibraryInfo.cpp.

References F.

◆ isFunctionVectorizable() [1/2]

bool TargetLibraryInfoImpl::isFunctionVectorizable ( StringRef F ) const

Return true if the function F has a vector equivalent with any vectorization factor.

Definition at line 1304 of file TargetLibraryInfo.cpp.

References compareWithScalarFnName(), llvm::StringRef::empty(), I, llvm::lower_bound(), and sanitizeFunctionName().

◆ isFunctionVectorizable() [2/2]

bool llvm::TargetLibraryInfoImpl::isFunctionVectorizable	(	StringRef	F,
		const ElementCount &	VF
	)		const

inline

Return true if the function F has a vector equivalent with vectorization factor VF.

Definition at line 202 of file TargetLibraryInfo.h.

References llvm::StringRef::empty(), F, and getVectorizedFunction().

Referenced by llvm::TargetLibraryInfo::isFunctionVectorizable().

◆ operator=() [1/2]

TargetLibraryInfoImpl & TargetLibraryInfoImpl::operator= ( const TargetLibraryInfoImpl & TLI )

Definition at line 923 of file TargetLibraryInfo.cpp.

◆ operator=() [2/2]

TargetLibraryInfoImpl & TargetLibraryInfoImpl::operator= ( TargetLibraryInfoImpl && TLI )

Definition at line 934 of file TargetLibraryInfo.cpp.

◆ setAvailable()

void llvm::TargetLibraryInfoImpl::setAvailable ( LibFunc F )

inline

Forces a function to be marked as available.

Definition at line 170 of file TargetLibraryInfo.h.

References F.

Referenced by initialize().

◆ setAvailableWithName()

void llvm::TargetLibraryInfoImpl::setAvailableWithName	(	LibFunc	F,
		StringRef	Name
	)

inline

Forces a function to be marked as available and provide an alternate name that must be used.

Definition at line 176 of file TargetLibraryInfo.h.

References assert(), F, and Name.

Referenced by initialize().

◆ setIntSize()

void llvm::TargetLibraryInfoImpl::setIntSize ( unsigned Bits )

inline

Initialize the C-level size of an integer.

Definition at line 261 of file TargetLibraryInfo.h.

Referenced by initialize().

◆ setShouldExtI32Param()

void llvm::TargetLibraryInfoImpl::setShouldExtI32Param ( bool Val )

inline

Set to true iff i32 parameters to library functions should have signext or zeroext attributes if they correspond to C-level int or unsigned int, respectively.

Definition at line 225 of file TargetLibraryInfo.h.

Referenced by initialize().

◆ setShouldExtI32Return()

void llvm::TargetLibraryInfoImpl::setShouldExtI32Return ( bool Val )

inline

Set to true iff i32 results from library functions should have signext or zeroext attributes if they correspond to C-level int or unsigned int, respectively.

Definition at line 232 of file TargetLibraryInfo.h.

Referenced by initialize().

◆ setShouldSignExtI32Param()

void llvm::TargetLibraryInfoImpl::setShouldSignExtI32Param ( bool Val )

inline

Set to true iff i32 parameters to library functions should have signext attribute if they correspond to C-level int or unsigned int.

Definition at line 238 of file TargetLibraryInfo.h.

Referenced by initialize().

◆ setShouldSignExtI32Return()

void llvm::TargetLibraryInfoImpl::setShouldSignExtI32Return ( bool Val )

inline

Set to true iff i32 results from library functions should have signext attribute if they correspond to C-level int or unsigned int.

Definition at line 244 of file TargetLibraryInfo.h.

Referenced by initialize().

◆ setUnavailable()

void llvm::TargetLibraryInfoImpl::setUnavailable ( LibFunc F )

inline

Forces a function to be marked as unavailable.

Definition at line 165 of file TargetLibraryInfo.h.

References F, and Unavailable.

Referenced by initialize().

Friends And Related Function Documentation

◆ TargetLibraryInfo

friend class TargetLibraryInfo

friend

Definition at line 84 of file TargetLibraryInfo.h.

The documentation for this class was generated from the following files:

include/llvm/Analysis/TargetLibraryInfo.h
lib/Analysis/TargetLibraryInfo.cpp

Public Types

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Member Enumeration Documentation

◆ VectorLibrary

Constructor & Destructor Documentation

◆ TargetLibraryInfoImpl() [1/4]

◆ TargetLibraryInfoImpl() [2/4]

◆ TargetLibraryInfoImpl() [3/4]

◆ TargetLibraryInfoImpl() [4/4]

Member Function Documentation

◆ addVectorizableFunctions()

◆ addVectorizableFunctionsFromVecLib()

◆ disableAllFunctions()

◆ getIntSize()

◆ getLibFunc() [1/3]

◆ getLibFunc() [2/3]

◆ getLibFunc() [3/3]

◆ getSizeTSize()

◆ getVectorizedFunction()

◆ getVectorMappingInfo()

◆ getWCharSize()

◆ getWidestVF()

◆ isCallingConvCCompatible() [1/2]

◆ isCallingConvCCompatible() [2/2]

◆ isFunctionVectorizable() [1/2]

◆ isFunctionVectorizable() [2/2]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ setAvailable()

◆ setAvailableWithName()

◆ setIntSize()

◆ setShouldExtI32Param()

◆ setShouldExtI32Return()

◆ setShouldSignExtI32Param()

◆ setShouldSignExtI32Return()

◆ setUnavailable()

Friends And Related Function Documentation

◆ TargetLibraryInfo